Speaking last night at a launch event for the new series, Doctor Who boss Steven Moffat explained: "At the end of the episode, there will be yet another awesome trailer for Doctor Who... and at the very end of the trailer there is, frankly, an enormous spoiler, a spoiler that may actually melt your brains!

"Some people hate spoilers and some people love spoilers. So we're gonna give you the option, in our frankly camp and ridiculous way...

"There will come up a warning and then there will be a countdown to the spoiler, and then there will be a warning to 'Blink now' – If, at that point, you close your eyes and wait until you hear the cliffhanger noise, you will have a better experience in a few weeks' time."

So there you have it. It's up to you. Doctor Who spoilers as democracy.